Wrench



July 13,1926.

' K E. NlcKERsoN WRENCH u Filed March 5. 1925 Patented July 13, i926.l

NCKERSON, GIF-OUTLOOK, MONTANA..

WRENCH.

Application amarrar-chaises. Ysei-iai No. 13,317.

This invention relates to new and useful improvements in wrenches, and particularly to slidingl Jaw wrenches.

@ne object of the invention is to provide a wrench wherein the movable jaw hasslidable and pivotal movement to more properly and iirmly grip the worleand wherein suchr movable will more quickly, and easily rel-ease itself from the work, for a new grip thereon.

Another `Objectis toprovide a` moving' means for the slidable jaw which is actuated by hand, against springmeans which also serves to move the onits pivot, and

maintain same in normal position. Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

ln the drawing: Y Figure 1 is a side elevation of a wrench made in accordance with my invention. y

Figure 2 is a top plan view of the same. Figure 3 is a sectional view on the line 3-3 of Figure 2.

Figure 4t isa bottom plan view of the jaw end of the wrench.

Referring particularly to the accompanying drawing, 10 represents the shank of the wrench. on one end, of which is formed the stationary jaw 11. On the upper edge face of the shank. at a suitable distance from the fixed jaw 11, there are formed the ratchet teeth 12; and in the intermediate portion of i5 the shank., slightly rearward of the toothed portion thereof, there is formed a longitudinal slot 15 ltraddlinn` the shank 10., and engaged the .with from the lower edrje portion thereof. is the hiiurcated portion l-l. of the movable jaw l5, the forward end ot which is toothed for cooperative action with'the tired jaw 11, on a piece ot' work.

""-,i)isposed through the bifurcations of the iiovaliile piw, and through said slot 13, isV

if a pivot pin 16, on which the movable .jaw is arranged to slide, within the limits of the slot. and on which said jaw is adapted for pivotal movement. Slidably embracing the shank 10, and the bifurcated portion of the jaw 15. is a block 17, and secured at one end within the portion of the block which lies below the shank 10, is the leaf spring 18, the other end of said spring being disposed longitudinalliT through the movable jaw, and being curved inwardly to bear against the adjacent edge face of the shank.

, its teethl from the teeth 'of the The block and the movable jaw may then be The normal action of the spring 18 is to swing' thejaw 15 in direction away from the lower or un'loothed edge of the shank, by rer-.son of thefact that'said springl also bears on the ymovable jaw. -.Formed in the upper wall of the longitudinalopening of the block 1'? are the ratchet teeth i9, which are arranged to `interlock with the teeth 12,` of rtl' shank. The before-mentioned'pivot pm le n 'le also passes through ythe block, whereby said block is capable' of roa'eking` movement to engage and disengage'its teeth with 'rela `'ien'to the teeth of the shank. Extending `il'ear-ward from the upper portion Vof the lock 1!" is a fingerpiece 20, which, when engag'ed by the finger of the hand which grasps the shank 10, andpressed toward the shank, 'will cause the block to rock on its pivot, and the toothed end thereof rise so as to disensham;

moved longitudinally of the shank 10, within the limits' of the slot 13,' whereby to engage said jaw with one side of a piece of work. f

lt will be ynoted thatV the action of the spring 18 tends to rock the block 17 so that its teeth engagewith the teeth of the shank, and at the same time cause the jaw 15 to be rocked awa-y from the untoothed edge face of the shank. n After the block 17 has lbeen rockedand the jaw 15 slipped into engagement with the work, the operators linger is released from the ingerpiece, whereupon the block will resume its normal position, with its teeth engaged with the teeth of the shank, thereby holding the jaw 15 against the work. U ponl rotating the wrench around the work, in the ordinary manner, the work will cause the jaw 15 to swing' upwardly until it contacts with the shank, whereupon the teeth ofthe two jaws will bite into the work and permit the work to turn with the wrench. Uponturning the wrench in the opposite direction, the spring` 18 will be permitted to swing the jaw 15 away from the shank, thereby releasing the hold thereof from the work, and permitting` a new grip to be gained 0n the work.

What is claimedis 1. A wrench including' a toothedshank having' an outer rigid jaw, an inner jaw having a bifurcation straddlingV the shank and being slidably and pivotally supported on the shank,y a rockable bifurcated member l ti il' straddiiiig' the shank and the bifurcation of the jaw and arranged to interlock with the toothed shank, a pivot connecting the roek- :ibie member und biureated jaw and slidubie iu the shank, and e. spring means carried by the roekabie member and engaged with the shank and jew for normally enroekzibie member with the Shank the bi'ifiireeted jaw away from 2. arene-ii including' a Shank having teeth zuil an outer rigid jaw5 im iimer jaw haring; bifurcation siidabiy striiddiiiig jthe shank, the shank having a leiigiiudiuzii slot, :i bifiireaed bioek eraddiiiigr the bifurcaiion of the iimer jaw, a pivot disposed through Seid siot and 4he bifurcations of i'he bleek and .imier jew, 'teeth on 1.She block for eiigiigemeii with the teeth of the shank, sind a spring carried by Jche block and eii- W fior e away from the shank.

3. A Wrench including :i shank, a jaw member siiciabiy and pivo'taily ii'iounied on he Shank, i r' sizable iociing member pivotaiiy supported on the jaw member und interioekiiigiy engegef Wih the shank, and Spring secured n one end to the rooiifible ioekirvgj member and having its other end engaged wiih the Shank While its mieriiiediate portion engages With the jaw member whereby 'o sii'i'mitnneoiisiy heid the jaw member yieiciabiy away from Jdie shank :md he locking rockabie member engaged with che Shank.

in testimony whereof, I here afixeci my Signature.

ELMER NICKERSON. 

